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    | Aztech 
      56K External Modem (EM3900) 
 PRODUCT SPECIFICATIONS MODEM STANDARDS
       
        V.90, K56 flex™, 
          V.34+, V.34, V.32bis, V.32, V.23, V.22bis, V.22, V.21, Bell 103 and 
          Bell 212A MODEM DATA RATES 
        56K/33.6/28.8/26.4/24.0/21.6/ 
          19.2/16.8/14.4/12.0/9.6/7.2/4.8/ 1.2Kbps and 300bps DATA THROUGHPUT
       
        Up to 230,400bps (with 
          compression) and 57,600bps (without compression) ERROR CORRECTION
       DATA COMPRESSION
       FAX MODULATION
       
        V.17, V.29, V.27ter, V.21 
          channel 2 Class 1 and Group 3 protocol SPEAKERPHONE FEATURES
       
        Full duplex capability 
          with acoustic and line echo cancellation VOICE FEATURES
       
        Digital telephone 
          answering machine for voice and fax messages
        Auto-dial and auto-answer
        Call discrimination 
          between data/fax/voice calls
        Line quality monitoring 
          and retraining
        Enhanced ADPCM/PCM voice 
          operation
        Concurrent wave playback 
          and DTMF detection VIDEO CONFERENCING
       
        H.324, ITU V.80 
          video-ready modem interface ADDITIONAL FEATURES
       
        Buzzer and amplifier on 
          board for call progress monitoring
        Tone or pulse dialing 
          option INTERFACE/CONNECTORS
       
        RS-232C (9-pin COM port 
          interface)
        RJ11 Telephone Jack(s)
        Power Connector
        Power Switch   |  |